Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Field-scale simulation of methane emissions from coastal wetlands in China using an improved version of CH4MOD(wetland) | |
Li, TT; Xie, BH ; Wang, GC; Zhang, W; Zhang, Q; Vesala, T; Raivonen, M; Li, TT (reprint author), Chinese Acad Sci, Inst Atmospher Phys, LAPC, Beijing 100029, Peoples R China.; Xie, BH (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China.; Xie, BH (reprint author), YICCAS, Shandong Prov Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China. [email protected]; [email protected]
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| 发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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| ISSN | 0048-9697 |
| 2016-07-15 | |
| 卷号 | 559期号:.页码:256-267 |
| 关键词 | Ch4 Emissions Salinity Coastal Wetlands Ch4mod(Wetland) Model China |
| DOI | 10.1016/j.scitotenv.2016.03.186 |
| 产权排序 | [Li, Tingting; Wang, Guocheng; Zhang, Wen; Zhang, Qing] Chinese Acad Sci, Inst Atmospher Phys, LAPC, Beijing 100029, Peoples R China; [Xie, Baohua] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China; [Xie, Baohua] YICCAS, Shandong Prov Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China; [Vesala, Timo; Raivonen, Maarit] Univ Helsinki, Dept Phys, POB 48, FI-00014 Helsinki, Finland; [Vesala, Timo] Univ Helsinki, Dept Forest Sci, POB 27, FI-00014 Helsinki, Finland |
| 作者部门 | 中科院海岸带环境过程与生态修复重点实验室 |
| 英文摘要 | Coastal wetlands are important CH4 sources to the atmosphere. Coastal wetlands account for similar to 10% of the total area of natural wetlands in China, but the size of this potential CH4 source remains highly uncertain. We introduced the influence of salinity on CH4 production and CH4 diffusion into a biogeophysical model named CH4MOD(wetland) so that it can be used in coastal wetlands. The improved model can generally simulate seasonal CH4 variations from tidal marshes dominated by Phragmites and Scirpus. However, the model underestimated winter CH4 fluxes from tidal marshes in the Yellow River Delta and YanCheng Estuary. It also failed to capture the accurate timing of the CH4 peaks in YanCheng Estuary and ChongMing Island in 2012. The improved model could generally simulate the difference between the annual mean CH4 fluxes from mangrove sites in GuangZhou and HaiKou city under different salinity and water table depth conditions, although fluxes were systematically underestimated in the mangrove site of HaiKou city. Using the improved model, the seasonal CH4 emissions simulated across all of the coastal wetlands ranged from 0.1 to 44.90 g m(-2), with an average value of 7.89 gm(-2), which is in good agreement with the observed values. The improved model significantly decreased the RMSE and RMD from 424% to 14% and 314% to -2%, respectively, and improved the EF from -18.30 to 0.99. Model sensitivity analysis showed that CH4 emissions were most sensitive to P-ox in the tidal marshes and salinity in the mangroves. The results show that previous studies may have overestimated CH4 emissions on a regional or global scale by neglecting the influence of salinity. In general, the CH4MOD(wetland) model can simulate seasonal CH4 emissions from different types of coastal wetlands under various conditions. Further improvements of CH4MOD(wetland) should include the specific characteristics of CH4 processes in mangroves to decrease the uncertainty in estimating regional or global CH4 emissions from natural wetlands. (C) 2016 Elsevier B.V. All rights reserved. |
| 文章类型 | Article |
| 资助机构 | National Natural Science Foundation of China(31000234 ; Chinese Academy of Sciences (CAS)(XDA05020204 ; Climate Change Special Foundation of China Meteorological Administration(CCSF201604) ; 41321064 ; XDA05050507) ; 41175132) |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | COMPARISON PROJECT WETCHIMP ; PROCESS-BASED MODEL ; GEORGIA SALT-MARSH ; NATURAL WETLANDS ; ORGANIC-MATTER ; BIOGEOCHEMISTRY MODEL ; ATMOSPHERIC CH4 ; NORTH-AMERICA ; TERRESTRIAL ECOSYSTEMS ; TEMPORAL VARIATIONS |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000375136600027 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/17057 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Li, TT (reprint author), Chinese Acad Sci, Inst Atmospher Phys, LAPC, Beijing 100029, Peoples R China.; Xie, BH (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China.; Xie, BH (reprint author), YICCAS, Shandong Prov Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China. [email protected]; [email protected] |
| 作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, LAPC 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat 3.YICCAS, Shandong Prov Key Lab Coastal Environm Proc 4.Univ Helsinki 5.Univ Helsinki, Dept Forest Sci |
| 推荐引用方式 GB/T 7714 | Li, TT,Xie, BH,Wang, GC,et al. Field-scale simulation of methane emissions from coastal wetlands in China using an improved version of CH4MOD(wetland)[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,559(.):256-267. |
| APA | Li, TT.,Xie, BH.,Wang, GC.,Zhang, W.,Zhang, Q.,[email protected].(2016).Field-scale simulation of methane emissions from coastal wetlands in China using an improved version of CH4MOD(wetland).SCIENCE OF THE TOTAL ENVIRONMENT,559(.),256-267. |
| MLA | Li, TT,et al."Field-scale simulation of methane emissions from coastal wetlands in China using an improved version of CH4MOD(wetland)".SCIENCE OF THE TOTAL ENVIRONMENT 559..(2016):256-267. |
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